nextafter.3 (ee7093a6400feef3d8a99579f28577817d70f6ad) nextafter.3 (29bf6af8904f9833bbc9c0e5f2219f785defe550)
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1.\" Copyright (c) 1985, 1991 Regents of the University of California.
2.\" All rights reserved.
3.\"
4.\" Redistribution and use in source and binary forms, with or without
5.\" modification, are permitted provided that the following conditions
6.\" are met:
7.\" 1. Redistributions of source code must retain the above copyright
8.\" notice, this list of conditions and the following disclaimer.
9.\" 2. Redistributions in binary form must reproduce the above copyright
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32.\" from: @(#)ieee.3 6.4 (Berkeley) 5/6/91
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34.\"
31.Dd May 4, 2005
35.Dd January 26, 2005
32.Dt NEXTAFTER 3
33.Os
34.Sh NAME
35.Nm nextafter ,
36.Dt NEXTAFTER 3
37.Os
38.Sh NAME
39.Nm nextafter ,
36.Nm nextafterf ,
37.Nm nextafterl ,
38.Nm nexttoward ,
39.Nm nexttowardf ,
40.Nm nexttowardl
40.Nm nextafterf
41.Nd next representable value
42.Sh LIBRARY
43.Lb libm
44.Sh SYNOPSIS
45.In math.h
46.Ft double
47.Fn nextafter "double x" "double y"
48.Ft float
49.Fn nextafterf "float x" "float y"
41.Nd next representable value
42.Sh LIBRARY
43.Lb libm
44.Sh SYNOPSIS
45.In math.h
46.Ft double
47.Fn nextafter "double x" "double y"
48.Ft float
49.Fn nextafterf "float x" "float y"
50.Ft long double
51.Fn nextafterl "long double x" "long double y"
52.Ft double
53.Fn nexttoward "double x" "long double y"
54.Ft float
55.Fn nexttowardf "float x" "long double y"
56.Ft long double
57.Fn nexttowardl "long double x" "long double y"
58.Sh DESCRIPTION
50.Sh DESCRIPTION
59These functions
51.Fn nextafter
52and
53.Fn nextafterf
60return the next machine representable number from
61.Fa x
62in direction
63.Fa y .
64.Sh SEE ALSO
65.Xr ieee 3 ,
66.Xr math 3
67.Sh STANDARDS
68The
54return the next machine representable number from
55.Fa x
56in direction
57.Fa y .
58.Sh SEE ALSO
59.Xr ieee 3 ,
60.Xr math 3
61.Sh STANDARDS
62The
69.Fn nextafter ,
70.Fn nextafterf ,
71.Fn nextafterl ,
72.Fn nexttoward ,
73.Fn nexttowardf ,
63.Fn nextafter
74and
64and
75.Fn nexttowardl
65.Fn nextafterf
76routines conform to
77.St -isoC-99 .
78They implement the Nextafter function recommended by
79.St -ieee754 ,
80with the extension that
81.Fn nextafter +0.0, -0.0
82returns
83.Li -0.0 ,

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66routines conform to
67.St -isoC-99 .
68They implement the Nextafter function recommended by
69.St -ieee754 ,
70with the extension that
71.Fn nextafter +0.0, -0.0
72returns
73.Li -0.0 ,

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